Colophon for Book R
At the end of the R book, I would like to show you the versions of the core R packages used to compile the book. I am wondering if there is anything I could do better than just use sessionInfo()
in a chunk like
\section*{Colophon}
This book was produced using \Sexpr{R.version.string},
\pkg{knitr} (\Sexpr{packageDescription("knitr")[["Version"]]})
and other package versions listed below.
<<session-info, size='footnotesize',R.options=list(width=90)>>=
print(sessionInfo(), locale = FALSE)
@
Specifically, it sessionInfo()
lists all packages that were loaded indirectly as well as those that were directly loaded.
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This will give a comma separated list of packages loaded in the current session:
pkgs <- sort(sub("package:", "", grep("package:", search(), value = TRUE)));
toString(Map(function(p) sprintf("%s (%s)", p, packageVersion(p)), pkgs))
by giving this line which you can insert by putting the code above in \Sexpr
:
[1] "base (3.2.0), datasets (3.2.0), graphics (3.2.0), grDevices (3.2.0), methods (3.2.0), stats (3.2.0), utils (3.2.0)"
This code only uses the basic R functions.
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I don't want to list all downloaded packages (base packages, dependencies) in the current session, so I came up with a better solution for my needs. Perhaps it will be useful to someone else.
-
Find all packages explicitly loaded via
library()
the .Rnw files for the book. -
Use
devtools:::package_info()
for formatting
For (1.) I used the following shell command protocol, all standard except for my trusty tcgrep
perl script which finds lines in files recursively
tcgrep -E Rnw '^library(.*)' . \
| grep '/ch' \
| perl -p -e 's/^.*://; s/\s*#.*//' \
| perl -p -e 's/library\(([\w\d]+)\)/"$1"/g; s/;/, /' \
| sort -u | perl -p -e 's/\n/, /' > packages-used.R
It gave me
packages <- c(
"AER", "ca", "car", "colorspace", "corrplot", "countreg", "directlabels", "effects", "ggparallel", "ggplot2", "ggtern", "gmodels", "gnm", "gpairs", "heplots", "Lahman", "lattice", "lmtest", "logmult", "MASS", "MASS", "countreg", "mgcv", "nnet", "plyr", "pscl", "RColorBrewer", "reshape2", "rms", "rsm", "sandwich", "splines", "UBbipl", "vcd", "vcdExtra", "VGAM", "xtable")
Then for (2.),
library(devtools)
pkg_info <- devtools:::package_info(packages)
# clean up unwanted
pkg_info$source <- sub(" \\(R.*\\)", "", pkg_info$source)
pkg_info <- pkg_info[,-2]
pkg_info
I like the result because it also defines packages other than CRAN (development version). I could also format this with kable
:
> pkg_info
package version date source
AER 1.2-3 2015-02-24 CRAN
ca 0.60 2015-03-01 R-Forge
car 2.0-25 2015-03-03 R-Forge
colorspace 1.2-6 2015-03-11 CRAN
corrplot 0.73 2013-10-15 CRAN
countreg 0.1-2 2014-10-17 R-Forge
directlabels 2013.6.15 2013-07-23 CRAN
effects 3.0-4 2015-03-22 R-Forge
ggparallel 0.1.1 2012-09-09 CRAN
ggplot2 1.0.1 2015-03-17 CRAN
ggtern 1.0.5.0 2015-04-15 CRAN
gmodels 2.15.4.1 2013-09-21 CRAN
gnm 1.0-8 2015-04-22 CRAN
gpairs 1.2 2014-03-09 CRAN
heplots 1.0-15 2015-04-18 CRAN
Lahman 3.0-1 2014-09-13 CRAN
lattice 0.20-31 2015-03-30 CRAN
lmtest 0.9-33 2014-01-23 CRAN
logmult 0.6.2 2015-04-22 CRAN
MASS 7.3-40 2015-03-21 CRAN
mgcv 1.8-6 2015-03-31 CRAN
nnet 7.3-9 2015-02-11 CRAN
plyr 1.8.2 2015-04-21 CRAN
pscl 1.4.9 2015-03-29 CRAN
RColorBrewer 1.1-2 2014-12-07 CRAN
reshape2 1.4.1 2014-12-06 CRAN
rms 4.3-1 2015-05-01 CRAN
rsm 2.7-2 2015-05-13 CRAN
sandwich 2.3-3 2015-03-26 CRAN
UBbipl 3.0.4 2013-10-13 local
vcd 1.4-0 2015-04-20 local
vcdExtra 0.6-8 2015-04-16 CRAN
VGAM 0.9-8 2015-05-11 CRAN
xtable 1.7-4 2014-09-12 CRAN
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If you are using LaTeX you can simply generate bibliography for all packages using:
%% begin.rcode rubber, results = 'asis', cache = FALSE
% write_bib (file = "generated .bib")
%% end.rcode
You can place this after your \ end {document} and add the appropriate \ bibliography {mybib, generated} entry. So you can also reference them with the usual \ cite {}
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